Lots of posts regarding nvidia drivers and problems with M4, but none seem to address the issue I have, so here goes. I was running M3 with an nvidia GT218 (GeForce 210) graphics card with no issues. After upgrade, everything looks OK until the desktop appears. My background flashes momentarily and then I get a solid grey background.
To add to the troubles, some applications (GnuCash in particular) seem to open and then immediately close. Maybe unrelated as ps does not show the app running.
When I go to MCC and look at the graphical server settings, it is set for nvidia GeForce 8100 and the Test button shows a black screen. I tried adjusting the settings and different drivers, but nothing seems to work.
Any suggestions?